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Side by Side Diff: content/renderer/accessibility/renderer_accessibility.h

Issue 1413423003: Move some AX attrs from AXNodeData to AXTreeData. (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Created 5 years, 2 months ago
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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 #ifndef CONTENT_RENDERER_ACCESSIBILITY_RENDERER_ACCESSIBILITY_H_ 5 #ifndef CONTENT_RENDERER_ACCESSIBILITY_RENDERER_ACCESSIBILITY_H_
6 #define CONTENT_RENDERER_ACCESSIBILITY_RENDERER_ACCESSIBILITY_H_ 6 #define CONTENT_RENDERER_ACCESSIBILITY_RENDERER_ACCESSIBILITY_H_
7 7
8 #include <vector> 8 #include <vector>
9 9
10 #include "base/containers/hash_tables.h" 10 #include "base/containers/hash_tables.h"
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45 // technology. It turns on Blink's accessibility code and sends a serialized 45 // technology. It turns on Blink's accessibility code and sends a serialized
46 // representation of that tree whenever it changes. It also handles requests 46 // representation of that tree whenever it changes. It also handles requests
47 // from the browser to perform accessibility actions on nodes in the tree 47 // from the browser to perform accessibility actions on nodes in the tree
48 // (e.g., change focus, or click on a button). 48 // (e.g., change focus, or click on a button).
49 class CONTENT_EXPORT RendererAccessibility : public RenderFrameObserver { 49 class CONTENT_EXPORT RendererAccessibility : public RenderFrameObserver {
50 public: 50 public:
51 // Request a one-time snapshot of the accessibility tree without 51 // Request a one-time snapshot of the accessibility tree without
52 // enabling accessibility if it wasn't already enabled. 52 // enabling accessibility if it wasn't already enabled.
53 static void SnapshotAccessibilityTree( 53 static void SnapshotAccessibilityTree(
54 RenderFrameImpl* render_frame, 54 RenderFrameImpl* render_frame,
55 ui::AXTreeUpdate<AXContentNodeData>* response); 55 AXContentTreeUpdate* response);
56 56
57 explicit RendererAccessibility(RenderFrameImpl* render_frame); 57 explicit RendererAccessibility(RenderFrameImpl* render_frame);
58 ~RendererAccessibility() override; 58 ~RendererAccessibility() override;
59 59
60 // RenderFrameObserver implementation. 60 // RenderFrameObserver implementation.
61 bool OnMessageReceived(const IPC::Message& message) override; 61 bool OnMessageReceived(const IPC::Message& message) override;
62 62
63 // Called when an accessibility notification occurs in Blink. 63 // Called when an accessibility notification occurs in Blink.
64 void HandleWebAccessibilityEvent(const blink::WebAXObject& obj, 64 void HandleWebAccessibilityEvent(const blink::WebAXObject& obj,
65 blink::WebAXEvent event); 65 blink::WebAXEvent event);
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119 119
120 // Events from Blink are collected until they are ready to be 120 // Events from Blink are collected until they are ready to be
121 // sent to the browser. 121 // sent to the browser.
122 std::vector<AccessibilityHostMsg_EventParams> pending_events_; 122 std::vector<AccessibilityHostMsg_EventParams> pending_events_;
123 123
124 // The adapter that exposes Blink's accessibility tree to AXTreeSerializer. 124 // The adapter that exposes Blink's accessibility tree to AXTreeSerializer.
125 BlinkAXTreeSource tree_source_; 125 BlinkAXTreeSource tree_source_;
126 126
127 // The serializer that sends accessibility messages to the browser process. 127 // The serializer that sends accessibility messages to the browser process.
128 using BlinkAXTreeSerializer = 128 using BlinkAXTreeSerializer =
129 ui::AXTreeSerializer<blink::WebAXObject, AXContentNodeData>; 129 ui::AXTreeSerializer<blink::WebAXObject,
130 AXContentNodeData,
131 AXContentTreeData>;
130 BlinkAXTreeSerializer serializer_; 132 BlinkAXTreeSerializer serializer_;
131 133
132 // Current location of every object, so we can detect when it moves. 134 // Current location of every object, so we can detect when it moves.
133 base::hash_map<int, gfx::Rect> locations_; 135 base::hash_map<int, gfx::Rect> locations_;
134 136
135 // The most recently observed scroll offset of the root document element. 137 // The most recently observed scroll offset of the root document element.
136 // TODO(dmazzoni): remove once https://bugs.webkit.org/show_bug.cgi?id=73460 138 // TODO(dmazzoni): remove once https://bugs.webkit.org/show_bug.cgi?id=73460
137 // is fixed. 139 // is fixed.
138 gfx::Size last_scroll_offset_; 140 gfx::Size last_scroll_offset_;
139 141
140 // Set if we are waiting for an accessibility event ack. 142 // Set if we are waiting for an accessibility event ack.
141 bool ack_pending_; 143 bool ack_pending_;
142 144
143 // Nonzero if the browser requested we reset the accessibility state. 145 // Nonzero if the browser requested we reset the accessibility state.
144 // We need to return this token in the next IPC. 146 // We need to return this token in the next IPC.
145 int reset_token_; 147 int reset_token_;
146 148
147 // So we can queue up tasks to be executed later. 149 // So we can queue up tasks to be executed later.
148 base::WeakPtrFactory<RendererAccessibility> weak_factory_; 150 base::WeakPtrFactory<RendererAccessibility> weak_factory_;
149 151
150 DISALLOW_COPY_AND_ASSIGN(RendererAccessibility); 152 DISALLOW_COPY_AND_ASSIGN(RendererAccessibility);
151 }; 153 };
152 154
153 } // namespace content 155 } // namespace content
154 156
155 #endif // CONTENT_RENDERER_ACCESSIBILITY_RENDERER_ACCESSIBILITY_H_ 157 #endif // CONTENT_RENDERER_ACCESSIBILITY_RENDERER_ACCESSIBILITY_H_
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